This has been fixed now in master. Was a stupid bug introduced by my 
commit 7c7040b87b7bb8662f6510dcdddab84262b3a815.

Ulrich

Am 27.04.2015 um 21:00 schrieb David Smith:
> I suspect this may be a driver issue, but wondered if anyone had any
> suggestions about an error I see running with OpenCL.
>
> The problem is I consistently see this:
>
> [opencl copy_image] could not copy image: -30
> [opencl_resampling] couldn't enqueue kernel! -30
> [opencl_demosaic] couldn't enqueue kernel! -30
> [opencl_pixelpipe] failed to run module 'demosaic'. fall back to cpu path
>
> Some background: I run darktable on a laptop with a GeForce GTX 860M. I
> run Ubuntu, and when I was on Ubuntu 14.10 there was no driver installed
> for the graphics card. When I upgraded to 15.04 there was a driver
> (NVIDIA binary driver - version 346.59), so I installed nvidia opencl
> libraries and compiled darktable (darktable-1.6.x branch) and I now get
> OpenCL available in darktable, but with the above error consistenly
> appearing when I (for instance) zoom into an image in darkroom. I did
> experiment a bit with darktable OpenCL settings, but nothing seemed to
> affect it, and I wondered if anyone had any suggestions of things to try.
>
> I have attached a log from running with darktable -d opencl -d perf.
>
> Thanks,
>
> David
>

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